Online Base64 Decoder Tool: Decode Base64 in Seconds
An online Base64 decoder tool turns Base64 text back into readable words, code or data in seconds. Paste the encoded string, decode it, and copy the result - no software to install and nothing to upload.
What Is Base64?
Base64 is a way of representing binary data, such as images or files, using only letters, numbers and a few symbols. It is widely used in emails, web pages, APIs and configuration files, because it lets binary data travel safely through systems built for plain text.
How to Decode Base64 Online
Copy the Base64 string, paste it into the decoder, and click decode. The tool checks the format and shows the original text straight away. If the result looks like gibberish, the input may be encoded twice, use a different character set, or contain a typo - check the start and end of the string first.
Encoding as Well as Decoding
The same tool works in reverse: type or paste plain text and encode it into Base64 for use in a URL, an email header or an API request. Encoding does not encrypt anything, so never use it to hide passwords or sensitive information - anyone can decode it just as easily.
Decode Base64 Instantly
Try our free Base64 Encode Decode tool. It encodes and decodes in your browser, handles text quickly, and is ideal for developers, students and anyone working with encoded data.